Steam-engine



No. 622,762. I Patented Apr. ll, I899. J. B. DISHNER &. A. M. LINDSEY.

STEAM ENGINE.

(Application flied May 14, 1898.)

(No Model.)

W/TNESSES IN VE N TOMS A 5 60 M TE A TTORNE Y.

m: Mann's warns co. waraumq. wmamcmm 0 cv UNITED STATES PATENT I Enron.

JAMES R. DISIINER AND AROHIBALD M. LINDSEY, OF IDA, TEXAS.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 622,762, dated April11, 1899.

Application filed May 14, 1898.

T0 aZZ whom it may concern.-

Be it known that we, JAMES R. DISHNER and ARCHIBALD M. LINDSEY, citizensof the United States, residing at Ida, in the county of Grayson andState of Texas, have invented certain new and useful Improvements inSteam-Engines; and we do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

Our invention relates to improvements in slide-valve engines withsteam-jacketed cylinders; and the object is to provide one that shall besimple, durable, and adapted for general use, also one that shall bemore economical in the use of steam.

To this end the novelty consists in the construction, combination, andarrangement of the same, as will be hereinafter more fully described,and particularly pointed out in the claim.

In the accompanying drawings the same reference-letters indicatecorresponding parts of the invention.

Figure 1 is a side elevation of our improved steam-engine. Fig. 2 is avertical section, and Fig. 3 a longitudinal section, of the same.

A represents the steam-cylinder, which is surrounded by a thinner outershell or casing B, both being connected at each end, also joined anddivided near the center by annular ring a, forming the annular spaces GO. The cylinder-heads E E project some distance in either end ofcylinder,'terminating on a line with outer edge of steam-ports cc, whichports we are enabled to make extremely short Serial No. 680,637. (Nomodel.)

by employing two valves 1) I), both being actuated by rod f.

cl d are exhaust-ports, each opening directly into annular spaces 0 0.Steam when exhausted through these ports passes around thesteam-cylinder A to the exhaust-outlet F, thus always keeping the outerside of steamcylinder hot, and thereby preventing condon sation of thelive steam within. The'steamchest G extends the Whole length of cylinderand is provided with cover 11, to which is at tached a flangedconnection I for steam-pipe.

Having thus described our invention, what we claim as new and useful,and desire to secure by Letters Patent, is-

In a steam-engine of the class described, the combination of asteam-cylinder, an outer casing or shell surrounding the cylinder toprovide an annular space and connected at both ends with the cylinder,and provided with a centrally-arranged exhaust-port F, an annular rib a,arranged in the said space and dividing the same into two separatecompartments or receptacles for the passage of exhaust-steam, asteam-chest formed integral with the outer shell or casing and providedwith steam-ports o and having exhaust-ports d, communicating with thesaid compartments or receptacles,the alternately-operating slide- Valveslocated at the ends of the steam-chest,

and a rod connecting the slide-valves, substantially as described.

In testimony whereof we aftix our signatures in presence of twowitnesses.

JAMES R. DISHNER. AROHIBALD M. LINDSEY.

Witnesses:

S. W. PORTER, Z. P. DEDERIOK, Jr,

